A majority (52 percent) of voters who followed the first presidential debate said Hillary Clinton won, according to an NBC News/Survey Monkey post-debate poll.

Twenty-one percent of those polled thought Trump was the winner, while 26 percent said neither candidate emerged victorious.

Fifty percent of Democrats said their impression of Clinton changed for the better after watching the debate. About a quarter of Republicans polled said their impression of Trump changed positively.

Thirty percent of women polled, regardless of party affiliation, said their opinion of Clinton improved after the debate, while just 11 percent of women overall said their opinion of Trump changed for the better.